| ACR | American Rheumatism Association |
| DED | dry eye disease |
| dSSc | diffuse systemic sclerosis |
| ECM | extracellular matrix |
| ELISA | enzyme-linked immunosorbent assay |
| EULAR | European League Against Rheumatism |
| FA | fluorescein angiography |
| lSSc | limited systemic sclerosis |
| MMPs | matrix metalloproteinases |
| MMP-9 | matrix metalloproteinase-9 |
| MMP-2 | matrix metalloproteinase-2 |
| mRss | modified Rodnan skin score |
| NVC | nailfold videocapillaroscopy |
| OCT | optical coherence tomography |
| SD | standard deviation |
| SSc | systemic sclerosis |
| sVEGFR-2 | soluble VEGF receptor-2 |
| TFBUT | tear film break-up time |
| TIMPs | tissue inhibitors of metalloproteinases |
| TIMP-1 | tissue inhibitor of metalloproteinases-1 |
| TIMP-2 | tissue inhibitor of metalloproteinases-2 |
| VEGF | vascular endothelial growth factor |